gtk-widget-compute-expand (widget orientation)

widget -- a gtk-widget object
orientation -- a gtk-orientation value for the expand direction

A boolean whether widget tree rooted here should be expanded.

Computes whether a container should give this widget extra space when possible. Containers should check this, rather than looking at the hexpand or vexpand properties.

This function already checks whether the widget is visible, so visibility does not need to be checked separately. Non-visible widgets are not expanded.

The computed expand value uses either the expand setting explicitly set on the widget itself, or, if none has been explicitly set, the widget may expand if some of its children do.